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Finding the Fourth Proportional to 800.42, 1,104.30 and 464.36

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Solution

The fourth proportional to 800.42, 1,104.30 and 464.36 is: 640.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.42 : 1,104.30 = 464.36 : x
  2. Step 2: Convert to fraction form
    800.42/1,104.30 = 464.36/x
  3. Step 3: Cross multiply
    800.42x = 1,104.30 × 464.36
  4. Step 4: Simplify right side
    800.42x = 512,787.23
  5. Step 5: Solve for x
    x = 512,787.23/800.42
  6. Step 6: Final answer
    x = 640.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.